How Lenders Actually Assess a Development Feasibility Study

Most developers assume a lender's decision comes down to the site itself its location, its zoning, its potential. In reality, the numbers behind the site carry far more weight than the site itself. Before a single dollar is approved, a lender will pull apart the feasibility study line by line, and two figures sit at the centre of that review: Gross Realisation Value and Total Development Costs.

What Gross Realisation Value Actually Measures

Gross Realisation Value, or GRV, is the projected total value of everything a development will produce once it's complete every dwelling, every lot, every commercial space, sold at current or conservatively forecast market prices. Lenders rarely take a developer's own GRV estimate at face value. Instead, they lean on independent valuations, because a projection built by the person seeking the loan carries an obvious bias, however unintentional.

This is one of the more common friction points for first-time applicants. A feasibility study built around optimistic sale prices, or one that assumes a shorter sales period than the local market typically supports, tends to get flagged early. Lenders would rather see a conservative GRV that holds up under scrutiny than an ambitious one that collapses the moment market conditions shift.

Total Development Costs: Where Most Applications Fall Short

Total Development Costs, or TDC, is the other half of the equation, and it's where lenders find the most inconsistencies. TDC isn't just land price plus construction cost it needs to capture professional fees, the infrastructure contributions councils charge to fund local infrastructure, holding costs across the build period, finance costs, and a contingency allowance that reflects genuine risk, not a token figure.

Contingency is worth dwelling on, because it's one of the clearest signals a lender uses to judge how realistic an application is. An allowance sitting below the level a project's complexity would reasonably require often reads less as confidence and more as an oversight and it's usually enough to prompt further questions before any approval moves forward.

Why the Ratios Matter More Than the Raw Numbers

Once GRV and TDC are established, lenders translate them into ratios: loan-to-cost and loan-to-GRV. These ratios tell a lender how much risk they're carrying relative to the project's own economics, and they matter more than either figure in isolation. A project with a strong GRV but a loan-to-cost ratio pushed to the upper limit still reads as higher risk, because there's less room to absorb a construction overrun or a softer sales period than forecast. This is broadly consistent with how the prudential regulator expects banks to manage pre-sales and commercial property lending risk, which places pre-sales coverage and exposure limits at the centre of a bank's own risk assessment.

Profit margin the gap between GRV and TDC, expressed as a percentage of GRV — rounds out the picture. It's the figure that tells a lender whether the deal has enough buffer to survive the unexpected, and it's often the first number an experienced credit assessor checks before reading anything else.

Stress-Testing Before You Apply

The developers who move through this process smoothly are usually the ones who've stress-tested their own numbers before a lender ever sees them modelling what happens to the deal under a construction cost overrun, or a GRV that comes in below forecast. It's a useful exercise for understanding the kind of scrutiny a property development loan Sydney applicant is likely to face, and it tends to surface the same weak points a lender's credit team would catch anyway just earlier, and on the developer's own terms rather than after a decline.

Getting the feasibility right isn't about presenting the most optimistic version of a project. It's about building a case that holds together under the kind of scrutiny a professional credit assessor is trained to apply because that's the version of the numbers a lender will actually trust.